/Engine/Source/Runtime/Engine/Classes/Sound/SoundSubmix.h
Adds an envelope follower delegate to the submix when envelope following is enabled on this submix.
void AddEnvelopeFollowerDelegate ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) * WorldContextObject, const [FOnSubmixEnvelopeBP](API\Runtime\Engine\Sound\FOnSubmixEnvelopeBP) & OnSubmixEnvelopeBP )